Lens.



J. G. GUEOVJIAN.

LENS. &

APPLICATION FILED DEG.10,1910.

1,003,599. Patented Sept. 19, 1911.

WITNESSES I INVE'NTOR JOHN G. GUEOVJIAN, OF NEW YORK, N. Y.

LENS.

To all whom it may concern.

Be it known that I, JOHN G. GuEovJiAN, a subject of the Sultan ofTurkey, and a resident of the city of New York, county of \Vestchester,and State of New York, have invented certain new and useful Improvementsin Lenses, of which the following is a specification.

This invention relates to optical lenses, with more particular referenceto lenses for photographic cameras, and has for its object the provisionof a lens with a surface configuration which, instead of beingsymmetrical to preserve the proportionate direction of the rays of lightprojected therethrougn, is varied from the normal to deflect the rays ina manner to produce a distorted image. This abnormal deflection of therays is to produce an unnatural photograph of an object for amusementpurposes, my lens so projecting the rays as tonrake a tall and slendersubject appear as short and fat on the negative, or a short andcorpulent subject appear as tall and slender on the negative, as thephotographer may desire.

My invention will be more readily understood by reference to theaccompanying drawings, forming a part of this specification, and inwhicl Figure l is a plan view of a lens embodying my invention; Fig. 2is a transverse section taken on the line 2-2 of Fig. 1, and Fig. 3 is asection taken on the line 3-3 of Fig. 1.

As will be noted from the drawings, my lens has the general appearanceof any ordinary plano-convex optical or photographic lens, but insteadof preserving symmetry and uniformity in the curvature of the convexsurface, along one diameter the curve near each edge of the lens isflattened, as shown at 5 and 6, the curve of the convex surface alongthis line being substantially that of an hyperbola, the

curvature at the apex 7, being more sharp and at the points 5and (S of alesser degree than the curvature of a normal plano-convex lens at thesepoints, as shown in Fig. 2. Furthermore, along the diametrical line of asection taken at right angles to that just referred to, as shown in Fig.3, I increase the degree of curvature at the points 8 and 9 near theedges of the convex surface and make the curve at the crown or apex 7more nearly flat. This curve may be said Specification of LettersPatent.

Application filed December 10, 1910.

Patented Sept. 19, 1911.

Serial No. 596,588.

to be parabolic, with the curvature at the points 8 and 9 more sharp andat the apex T of a lesser degree than that of the normal plano-convexlens. The convex surface of the lens throughout the quadrant between thecross sections the curvature of which has just been described, mergessymmetrically from the sharper to the flatter hyperbolic curve.

The lens which I have just described, when mounted in the positionindicated in the drawings, will so deflect the rays of light directedagainst the same as to cause the same to diverge in vertical planes andto converge in horizontal planes, thus distorting the image projected ona screen or to the eye so that the vertical dimensions of the object areproportionately increased and the horizontal dimensions thereofproportionately decreased, in the manner hereinbefore suggested. Byturning the lens through an arc of 90, the conditions just describedwill be reversed, and the rays be caused to diverge in horizontal planesand converge in vertical planes, whereby the image will beproportionately reduced in vertical dimen sions and proportionatelyincreased in horizontal dimensions.

By the use of this lens, it will be apparent that ludicrously distortedphotographic and optical efiects may be produced for amusement and otherpurposes.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. An optical lens having a symmetrically distorted convex surface, thecurve of said surface being flattened along one diameter near the endsthereof, substantially as and for the purpose specified.

'2. An optical lens having a symmetrically distorted convex surface, thecurve of said surface being sharpened along one diameter near the endsthereof, substantially as and for the purpose specified.

3. An optical lens of plano-convex configuration having the curvature ofits convex surface flattened near the ends of one diameter thereof andsharpened near the ends of a diameter at right angles to saidfirst-mentioned diameter, substantially as and for the purposespecified.

' 4. A plano-convex optical lens having a convex surface symmetricallydistorted from the normal through the flattening of the curve of saidsurface near the ends of one In testimony of the foregoing, I havediameter and the sharpening of the curves hereunto set my hand in thepresence of two near the ends of a diameter at right angles Witnesses:

to said first-mentioned diameter, said curves JOHN G. GUEOVJ IAN.symmetrically merging into each other along the convex surface of saidlens, substantially as and for the purpose specified.

Witnesses:

AARON GINSBURG, P. FRANK SONNEK.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of I 'atents, Washington, D. C.

